Fair Value - Borrowings (Detail) - USD ($) $ in Millions	Sep. 30, 2023	Jun. 30, 2023
Fair Value Disclosures [Abstract]
Fair value	$ 6,604	$ 6,895
Carrying value	$ 7,212	$ 7,210

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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